Currently reading: How does hybrid company car tax work?

Hybrids are important in the transition to more sustainable fleets, with some attractive tax breaks on offer

After more than 25 years on sale in the UK, hybrids are finally having their place in the limelight. A quarter of new cars were hybrids in 2025, according to the Society of Motor Manufacturers and Traders (SMMT), and they’re a popular choice for company car drivers too.

It’s easy to see why. Hybrids combine electric and combustion engine power to maximise fuel efficiency, delivering lower bills for drivers who aren’t ready to go battery electric, while contributing to fleet and vehicle manufacturers’ ever-tighter CO2 targets.

Although the tax breaks are being wound down, and hybrids will be phased out completely once the UK’s new car market becomes 100% electric in 2035, there are still plenty of good financial reasons to consider one as a company car.  

How much does hybrid company car tax cost?

If you’re driving a car which is owned or leased by your employer but also available for private journeys, then it’s classed as a ‘benefit in kind’ and it’s a taxable perk. Since 2002, that tax system has incentivised vehicles with the lowest CO2 emissions, counteracting hybrids’ higher list prices and creating an early-adopter market among business fleets.

Those incentives are still in place. Every company car is assigned what’s called a ‘taxable value’, is a percentage of its list price (known in tax terms as the P11d value) that gets larger for models that emit more CO2 at the tailpipe. Company car tax bands were overhauled in April 2020 and, although so-called ‘self-charging’ hybrids are pretty much line with an efficient petrol or diesel car, there are some sizeable incentives for plug-in hybrids (PHEVs).

PHEVs get a larger, mains-rechargeable battery, offering a much longer electric range and significantly lower published CO2 emissions. If they emit 50g/km or less, then they fall into one of five ultra-low tax bands according to their electric range. Today, that’s typically 7% or 10% of their list price, compared to at least 25% for the most efficient ‘self-charging’ hybrids, so the taxable value is much lower.

Vehicle Type P11d BiK Taxable Value (2026/27)
Hyundai Tucson N Line Edition Hybrid Hybrid £39,130 32% £12,522
Hyundai Tucson N Line Edition PHEV PHEV £42,035 10% £4,204
Peugeot 308 Allure BlueHDI 130 Diesel £30,170 32% £9,654
Peugeot 308 Allure PHEV PHEV £34,390 10% £3,439

Benefit in kind is a percentage of that value based on your income tax band. England, Wales and Northern Ireland have three tiers (20%, 40% and 45%), while Scotland has five bands (between 19% and 46%). A driver paying 20% income tax would be liable for 20% of the taxable value each year, typically split into 12 monthly instalments and collected from their monthly wages. 

The result is PHEVs have much cheaper tax than an equivalent petrol, diesel or hybrid vehicle, as shown below. It’s led to them jumping from a 10% to 22% share of all company cars since the new rates were introduced in 2020.

Vehicle Type Monthly Benefit-in-Kind (2026/27)
20% taxpayer 40% taxpayer
Hyundai Tucson N Line Edition Hybrid Hybrid £209 £417
Hyundai Tucson N Line Edition PHEV PHEV £70 £140
Peugeot 308 Allure BlueHDI 130 Diesel £161 £322
Peugeot 308 Allure PHEV PHEV £57 £115

However, there are changes ahead. From April 2028, all PHEVs under 51g/km CO2 will drop into a new 18% Benefit-in-Kind band, regardless of electric range, which almost double the tax costs overnight. But with rates still significantly lower than anything other than full EVs, drivers can still expect to be quids in at that point.

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How are businesses being incentivised to use hybrids?

Drivers aren’t the only people being nudged towards PHEVs. There are some attractive incentives for employers, too.

Employers pay Class 1A National Insurance Contributions (NICs) for providing workplace perks. For cars, this is a flat 15% of the vehicle’s taxable value, so it’s just as heavily CO2-weighted as the BiK system for drivers and subject to the same changes in April 2028. Some examples are shown below.

Vehicle Type Annual NICs
Hyundai Tucson N Line Edition Hybrid Hybrid £1,878
Hyundai Tucson N Line Edition PHEV PHEV £631
Peugeot 308 Allure BlueHDI 130 Diesel £1,448
Peugeot 308 Allure PHEV PHEV £516

Businesses can also deduct 100% of the monthly lease cost (or 18% of the purchase cost) against pre-tax profits for vehicles emitting 50g/km CO2 or less. Above that threshold, the deduction is reduced to 85% and 6% respectively.

Vehicle Excise Duty (VED, or ‘road tax’) incentives aren’t as generous as they once were. PHEVs under 51g/km get a heavily discounted £115 tax first-year rate, compared to at least £405 for the most efficient petrol models, but annual renewals are £200 for all cars registered since 2017. 

All hybrids also attract the additional £440 Expensive Car Supplement if they’re priced at £40,000 or more. It’s applied on top of the first five renewals and, in some cases, can leave PHEVs with a £640 tax bill compared to £200 for higher emission but lower priced petrol, diesel or ‘self-charging’ hybrid versions of the same car.

There’s more ahead. PHEVs are set to be taxed 1.5p per mile from April 2028, as the Treasury aims to plug the gap in its declining fuel duty intake. The workings of that system are still under consultation, but will affect business mileage costs for fleets. 

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